kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc

A use-after-free vulnerability has been identified in the Linux kernel's HFSC Hierarchical Fair Service Curve queuing discipline when it is configured with NETEM Network Emulation as a child. This flaw can lead to a kernel panic or crash due to incorrect assumptions about the queue state...

kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc

A use-after-free vulnerability has been identified in the Linux kernel's HFSC Hierarchical Fair Service Curve queuing discipline when it is configured with NETEM Network Emulation as a child. This flaw can lead to a kernel panic or crash due to incorrect assumptions about the queue state...

kernel: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice

A use-after-free UAF vulnerability, which also presents a potential infinite loop condition, has been resolved in the Linux kernel. This flaw affects the HFSC Hierarchical Fair Service Curve queuing discipline when it is used in conjunction with NETEM Network Emulation. A malicious user could...

kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc

A use-after-free vulnerability has been identified in the Linux kernel's HFSC Hierarchical Fair Service Curve queuing discipline when it is configured with NETEM Network Emulation as a child. This flaw can lead to a kernel panic or crash due to incorrect assumptions about the queue state...

kernel: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice

A use-after-free UAF vulnerability, which also presents a potential infinite loop condition, has been resolved in the Linux kernel. This flaw affects the HFSC Hierarchical Fair Service Curve queuing discipline when it is used in conjunction with NETEM Network Emulation. A malicious user could...

kernel: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice

A use-after-free UAF vulnerability, which also presents a potential infinite loop condition, has been resolved in the Linux kernel. This flaw affects the HFSC Hierarchical Fair Service Curve queuing discipline when it is used in conjunction with NETEM Network Emulation. A malicious user could...

SUSE-SU-2025:20733-1 Security update for kernel-livepatch-MICRO-6-0_Update_6

This update for kernel-livepatch-MICRO-6-0Update6 fixes the following issues: - CVE-2025-38177: kernel: schhfsc: make hfscqlennotify idempotent bsc1246356 - CVE-2025-38109: net/mlx5: fix ECVF vports unload on shutdown flow bsc1245685 - CVE-2025-38181: calipso: fix null-ptr-deref in...

SUSE-SU-2025:20768-1 Security update for kernel-livepatch-MICRO-6-0_Update_2

This update for kernel-livepatch-MICRO-6-0Update2 fixes the following issues: - CVE-2024-49860: ACPI: sysfs: validate return type of STR method bsc1231862 - CVE-2025-38177: kernel: schhfsc: make hfscqlennotify idempotent bsc1246356 - CVE-2025-38109: net/mlx5: fix ECVF vports unload on shutdown fl...

CLSA-2025-1758009294 kernel: Fix of 3 CVEs

posix-cpu-timers: fix race between handleposixcputimers and posixcputimerdel CVE-2025-38352 - schqfq: make qfqqlennotify idempotent CVE-2025-38177 - schhfsc: make hfscqlennotify idempotent CVE-2025-38177 - schdrr: make drrqlennotify idempotent CVE-2025-38177 - schhtb: make htbqlennotify...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: idle: Check acpifetchacpidev return value CVE-2022-50327 In the Linux kernel, the following vulnerability has been resolved: bpf: Fix helper writes to read-only maps CVE-2024-49861 In the Linux...

UBUNTU-CVE-2023-53215

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Don't balance task to its current running CPU We've run into the case that the balancer tries to balance a migration disabled task and trigger the warning in settaskcpu like below: ------------ cut here ------------...

UBUNTU-CVE-2022-50329

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for bfqq in bfqexiticqbfqq Commit 64dc8c732f5c "block, bfq: fix possible uaf for 'bfqq-bic'" will access 'bic-bfqq' in bicsetbfqq, however, bfqexiticqbfqq can free bfqq first, and then call bicsetbfqq, which...

CVE-2023-53215 sched/fair: Don't balance task to its current running CPU

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Don't balance task to its current running CPU We've run into the case that the balancer tries to balance a migration disabled task and trigger the warning in settaskcpu like below: ------------ cut here ------------...

CVE-2023-53215

CVE-2023-53215 affects the Linux kernel sched/fair component. The issue occurs when the load balancer tries to migrate a task that is migration-disabled to its current CPU, triggering a warning in set_task_cpu() during balance. The root cause is how the new_dst_cpu is selected from env->dst_gr...

PT-2025-37631

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a use-after-free issue within the block, bfq subsystem, specifically related to bfqq in the bfq exit icq bfqq function. The commit 64dc8c732f5c addresses this b...

SUSE-SU-2025:20702-1 Security update for kernel-livepatch-MICRO-6-0_Update_8

This update for kernel-livepatch-MICRO-6-0Update8 fixes the following issues: - CVE-2025-38087: net/sched: fix use-after-free in tapriodevnotifier bsc1245505 - CVE-2025-38001: netsched: hfsc: Address reentrant enqueue adding class to eltree twice bsc1244235 - CVE-2025-38000: schhfsc: Fix qlen...

SUSE CVE-2025-39677

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change handlers when adjusting to the new limit. The problem is the following...

Linux Distros Unpatched Vulnerability : CVE-2025-39677

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change...

CVE-2025-39677 net/sched: Fix backlog accounting in qdisc_dequeue_internal

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change handlers when adjusting to the new limit. The problem is the following...

Oracle Linux 8 : kernel (ELSA-2025-15008)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-15008 advisory. - scsi: lpfc: Use memcpy for BIOS version Ewan D. Milne RHEL-105927 CVE-2025-38332 - RDMA/iwcm: Fix use-after-free of work objects after cmid...